Riding boot



FIG. 1 is an outer side view of a riding boot of the new design;

FIG. 2 is an inner side of view of a riding boot of the new design;

FIG. 3 is a front view of a riding boot of the new design;

FIG. 4 is a rear view of a riding boot of the new design;

FIG. 5 is a bottom view of a riding boot of the new design; and,

FIG. 6 is a top view of a riding boot of the new design.

The ornamental design for a riding boot, as shown and described.